body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-base);
    color: var(--text-color);
    padding-top: 56px;
    padding-bottom: 50px;
    line-height: 1.5;
}

/* Footer Panel */
.footer-panel {
    background: var(--bg-elevated);
    border-top: 1px solid var(--border-subtle);
    z-index: 1050;
    padding: 4px 8px;
}

.footer-row {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    justify-content: space-between;
}

.footer-row-1 {
    padding: 2px 0;
}

.footer-row-2 {
    padding: 2px 0;
    border-top: 1px solid var(--border-subtle);
    margin-top: 4px;
}

.footer-panel .btn {
    font-size: 0.75rem;
    padding: 2px 8px;
}

.footer-panel .btn-group .btn.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: #fff;
}

/* 検索入力 */
.footer-panel .search-input {
    width: 100px;
    font-size: 0.8rem;
}

/* 日付入力 */
.footer-panel .date-input {
    width: 130px;
    font-size: 0.75rem;
    padding: 2px 4px;
}

.footer-panel .date-nav {
    flex-shrink: 0;
}

/* PC: 1行表示 */
@media (min-width: 768px) {
    .footer-panel {
        height: auto;
    }
    .footer-row-1 {
        justify-content: flex-start;
    }
    .footer-panel .search-input {
        width: 120px;
    }
}

/* モバイル: 2行表示 */
@media (max-width: 767px) {
    body {
        padding-bottom: 90px;
    }
    .footer-row-1 {
        justify-content: space-between;
    }
    .footer-row-2 {
        justify-content: space-between;
    }
    .footer-panel .search-input {
        width: 80px;
    }
    .footer-panel .date-input {
        width: 110px;
    }
    .pc-controls {
        display: none !important;
    }
}

/* Font Size Classes */
body.font-xs .card-title,
body.font-xs .card.text-only .card-title { font-size: 0.6rem !important; line-height: 1.3 !important; }
body.font-xs .card-meta { font-size: 0.5rem !important; }

body.font-sm .card-title,
body.font-sm .card.text-only .card-title { font-size: 0.75rem !important; line-height: 1.35 !important; }
body.font-sm .card-meta { font-size: 0.6rem !important; }

body.font-md .card-title,
body.font-md .card.text-only .card-title { font-size: 0.95rem !important; line-height: 1.4 !important; }
body.font-md .card-meta { font-size: 0.7rem !important; }

body.font-lg .card-title,
body.font-lg .card.text-only .card-title { font-size: 1.2rem !important; line-height: 1.45 !important; }
body.font-lg .card-meta { font-size: 0.85rem !important; }

/* Modern Header */
.navbar {
    background: var(--bg-elevated) !important;
    border-bottom: 1px solid var(--border-subtle);
    height: 56px;
    z-index: 1050;
}

/* Navigation */
.navbar-nav {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 2px;
}

.nav-link {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary) !important;
    transition: all var(--transition-fast);
    padding: 6px 12px;
    border-radius: var(--radius-md);
    white-space: nowrap;
}

.nav-link:hover {
    color: var(--text-color) !important;
    background: var(--bg-surface);
}

.nav-link.active {
    color: var(--primary-light) !important;
    background: rgba(99, 102, 241, 0.15);
}

/* Dropdown */
.dropdown-menu {
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-xl);
    border-radius: var(--radius-lg);
    padding: 4px;
    max-height: 80vh;
    overflow-y: auto;
}

.dropdown-item {
    color: var(--text-secondary);
    font-size: 0.85rem;
    padding: 8px 12px;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.dropdown-item:hover,
.dropdown-item.active {
    background: var(--bg-surface);
    color: var(--text-color);
}

/* Grid Layout - CSS Grid for tight packing */
.calendar-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1px;
    padding: 0;
}

/* サイズ別グリッドカラム */
body.font-xs .calendar-grid {
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
}
body.font-sm .calendar-grid {
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
}
body.font-md .calendar-grid {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
}
body.font-lg .calendar-grid {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

.grid-item {
    content-visibility: auto;
    contain-intrinsic-size: 120px;
}

/* Modern Card Design */
.card {
    background: var(--bg-card);
    border-width: 1px;
    border-style: solid;
    border-color: var(--border-color);
    border-radius: 0;
    overflow: hidden;
    height: 100%;
}

.card-img-wrapper {
    width: 100%;
    background: var(--bg-elevated);
    position: relative;
}

.card-img-top {
    width: 100%;
    height: auto;
    display: block;
}

.card-body {
    padding: 6px 8px;
}

/* Image Card Overlay */
.card.has-image .card-body {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0,0,0,0.85));
    padding: 20px 8px 6px;
}

.card.has-image .card-title {
    color: #fff;
    font-weight: 600;
    text-shadow: 0 1px 3px rgba(0,0,0,0.8);
}

/* Card Title */
.card-title {
    font-size: 0.7rem;
    line-height: 1.3;
    margin-bottom: 2px;
    color: var(--text-color);
    font-weight: 500;
    overflow-wrap: break-word;
    word-break: break-word;
}

.card.text-only .card-title {
    font-size: 0.75rem;
    font-weight: 400;
    color: var(--text-secondary);
}

/* Card Meta */
.card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.6rem;
    color: var(--text-muted);
    gap: 4px;
}

.card-meta-right {
    display: flex;
    align-items: center;
    gap: 6px;
}

/* Domain Badge */
.domain-badge {
    background: var(--bg-surface);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-family: 'SF Mono', Monaco, monospace;
    font-size: 0.6rem;
    max-width: 80px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color: var(--text-muted);
    text-decoration: none;
    transition: all var(--transition-fast);
}

a.domain-badge:hover {
    background: var(--bg-elevated);
    color: var(--text-secondary);
}

/* Text Only Card */
.card.text-only .card-body {
    padding: 8px;
}

/* Tweet Styling */
.grid-item.is-tweet .card {
    background: var(--bg-elevated);
    border-color: rgba(29, 161, 242, 0.2);
}

.grid-item.is-tweet .card-title {
    color: var(--text-color);
}

/* NG Content */
.card.ng-content {
    opacity: 0.3;
    filter: grayscale(80%);
}

.card.ng-content:hover {
    opacity: 0.5;
    filter: grayscale(40%);
}

/* Keyword Highlights */
.keyword-ok {
    background: rgba(16, 185, 129, 0.25);
    color: var(--accent-emerald);
    padding: 0 3px;
    border-radius: 3px;
    font-weight: 500;
}

.keyword-ng {
    background: rgba(244, 63, 94, 0.2);
    color: var(--text-muted);
    padding: 0 3px;
    border-radius: 3px;
}

.search-highlight {
    background: rgba(99, 102, 241, 0.3);
    color: var(--primary-light);
    padding: 0 3px;
    border-radius: 3px;
    font-weight: 500;
}

/* Favorite Star */
.favorite-star-inline {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    cursor: pointer;
    opacity: 0.4;
    transition: all var(--transition-fast);
}

.favorite-star-inline:hover {
    opacity: 1;
    transform: scale(1.15);
}

.favorite-star-inline.active {
    opacity: 1;
}

.favorite-star-inline svg {
    width: 100%;
    height: 100%;
}

/* Favorites Toggle */
.favorites-toggle {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    padding: 4px 10px;
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 4px;
}

.favorites-toggle:hover {
    background: rgba(245, 158, 11, 0.1);
    border-color: var(--accent-amber);
    color: var(--accent-amber);
}

.favorites-toggle.active {
    background: rgba(245, 158, 11, 0.15);
    border-color: var(--accent-amber);
    color: var(--accent-amber);
}

/* Search Input */
.search-input {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    color: var(--text-color);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.search-input::placeholder {
    color: var(--text-muted);
}

.search-input:focus {
    background: var(--bg-elevated);
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.2);
}

/* Date Input */
.date-input {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    color: var(--text-color);
    border-radius: var(--radius-md);
}

.date-input:focus {
    background: var(--bg-elevated);
    border-color: var(--primary-color);
    outline: none;
}

/* Loading Indicator */
#loading {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    padding: 10px 20px;
    border-radius: var(--radius-full);
    display: none;
    z-index: 1000;
    color: var(--text-secondary);
    font-size: 0.85rem;
    box-shadow: var(--shadow-lg);
}

/* Reload Spinner Overlay */
.reload-spinner {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.reload-spinner.show {
    display: flex;
}

/* Button Styles */
.btn-outline-secondary {
    border-color: var(--border-color);
    color: var(--text-muted);
    transition: all var(--transition-fast);
    border-radius: var(--radius-md);
}

.btn-outline-secondary:hover {
    background: var(--bg-surface);
    border-color: var(--border-color);
    color: var(--text-color);
}

#thumb-mode-btn.active,
#stats-btn.active {
    background: rgba(99, 102, 241, 0.15);
    border-color: var(--primary-color);
    color: var(--primary-light);
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .nav-link {
        padding: 4px 8px;
        font-size: 0.75rem;
    }

    .search-input {
        min-width: 100px;
    }

    .grid-item {
        padding: 2px;
    }

    .card-body {
        padding: 8px;
    }
}